Experimental study on the air-side heat transfer characteristics of a spirally-coiled circular fin-tube heat exchanger according to geometric parameters

Taehyung Kang, Mooyeon Lee, Yong Chan Kim, Sungjung Yun

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The objective of this study is to investigate the air-side heat transfer characteristics of a spirally-coiled circular fintube heat exchanger for various geometric parameters under non-frosting conditions. The heat transfer characteristics of the heat exchanger were analyzed with respect to heat exchanger geometries, and then, the characteristics were compared with those of rectangular-plate fin-tube heat exchangers with discrete fins. The heat transfer coefficient increased with a decrease in the number of tube rows and an increase in the fin pitch. The optimum length of the L-foot was 2.7 mm. In addition, the heat transfer rate increased with a decrease in the tube pitch and the tube thickness. The heat transfer coefficient of the spirallycoiled circular fin-tube heat exchanger was 24.3% higher than that of the rectangular-plate fin-tube heat exchanger.

Original languageEnglish
Pages (from-to)515-522
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume34
Issue number5
DOIs
Publication statusPublished - 2010 May 1

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Fins (heat exchange)
Tubes (components)
Heat exchangers
Heat transfer
Heat transfer coefficients
Air
Geometry

Keywords

  • Heat exchanger
  • Heat transfer
  • Refrigerator
  • Spirally-coiled circular fin-tube

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "The objective of this study is to investigate the air-side heat transfer characteristics of a spirally-coiled circular fintube heat exchanger for various geometric parameters under non-frosting conditions. The heat transfer characteristics of the heat exchanger were analyzed with respect to heat exchanger geometries, and then, the characteristics were compared with those of rectangular-plate fin-tube heat exchangers with discrete fins. The heat transfer coefficient increased with a decrease in the number of tube rows and an increase in the fin pitch. The optimum length of the L-foot was 2.7 mm. In addition, the heat transfer rate increased with a decrease in the tube pitch and the tube thickness. The heat transfer coefficient of the spirallycoiled circular fin-tube heat exchanger was 24.3{\%} higher than that of the rectangular-plate fin-tube heat exchanger.",
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